Monday, October 20, 2014
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Audio Lm 3909 IC conduction tester
Audio Lm 3909 IC conduction tester
This tiny conductivity tester works with LM 3909. The tester makes a beeping sound if the resistance between the test probes between 0 and 100 O lies. Due to the volume of the beep, the resistance between the test probes can be determined.
Parts List
R1 = 1 k
C1 = 10 uF
C2 = 100 nF
LS = Loudspeaker 12 to 16 Ω
IC1 = LM 3909
R1 = 1 k
C1 = 10 uF
C2 = 100 nF
LS = Loudspeaker 12 to 16 Ω
IC1 = LM 3909
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